The Catulpa: True story of the daring escape of Irish nationalists from an Australian prison in 1867. Just 11 minutes long. https://www.youtube.com/watch?v=If8V0K0Pvco.
RMS Justicia: Take a dive into the deep to see the wreckage of the RMS Justicia, a White Star Liner that was torpedoed in 1918 and lies just off the Donegal coast. Two and a half minutes long, it's here. (3 November 2023 update - Link to worldirish.com not working. Site appears to have been removed.)
So Cool: A two and a half minute long film telling the mythical story behind the Giant's Causeway and its most famous resident. View it at http://vimeo.com/45569144.
And then get back to work!